[ 2168.705534][T12288] br0: port 1(dummy0) entered blocking state
[ 2168.705770][T12288] br0: port 1(dummy0) entered disabled state
[ 2168.706014][T12288] dummy0: entered allmulticast mode
[ 2168.706942][T12288] dummy0: entered promiscuous mode
[ 2168.732020][T12289] br0: port 1(dummy0) entered blocking state
[ 2168.732199][T12289] br0: port 1(dummy0) entered forwarding state
[ 2171.099024][   T12] dummy0: left allmulticast mode
[ 2171.099209][   T12] dummy0: left promiscuous mode
[ 2171.099437][   T12] br0: port 1(dummy0) entered disabled state